TM 11-6780-225-35
1
Knob
(MP100)
15
Talk bar
(MP106)
2
Screw
(H100)
16
Talk bar plate
(MP107)
3
Nut
(H101)
17
Screw
(H109)
4
Speaker plate
(MP102)
18
Nut
(HilO)
5
Speaker
(MK1)
19
OFF-ON volume control
(S1, R1)
6
Intercom cover
(MP103)
20
Nut
(Hill)
7
Screw
(H102)
21
Station selector
(S2)
8
Washer
(H103)
22
Bracket
(MP108)
9
Spring
(MP104)
23
Screw
(H112)
10
Washer
(H1OS)
24
Screw
(H113)
11
Screw
(H106)
25
Rectifier diode
(Q1)
12
Washer
(H107)
26
Insulator
(MP109)
13
Spacer
(MP105)
27
Angle
(MP110)
14
Screw
(H108)
28
Chassis
(MP111)
Figure 3-7-Continued
with attaching parts (28) through (38) and clamp (40).
(24) by removing screws (17), nuts (18), and
(9) Install condenser coil (27) with attaching
washers (19).
parts (19) through (26)..
(5) Remove locating pin (25) from plate (26).
(10) Install spiral tube evaporator assembly
b. Cleaning and Inspection.
with attaching parts (13) through (17).
(1) Inspect mechanical components for
(11) Install humidistat assembly (12) with
cracks, dents, and damaged screw threads.
screws (9), washers (10), and nuts (11). Connect wiring
(2) Inspect electrical components for apparent
according to tag references.
insulation breakdown, loose connections, and possible
(12) Install case (8) with screws (5), washers
shock hazards.
(6), and lockwashers (7).
(3) Clean all components as required using
(13) Install air intake cover (4) with screws (1),
cleaning compound and stiff bristle brush.
washers (2), and lockwashers (3).
c. Assembly.
(14) When all connections are tight, purge air
(1) Assemble locating pin (25) to plate (26).
and moisture from the refrigeration circuit by utilizing the
(2) Install manual reset circuit breaker (24)
charging process tube on the side of the compressor
with screws (17), washers (19), and nuts (18).
(53). Evacuate all air and moisture from refrigerant
(3) Install power connection (20) with screws
system by pumping a vacuum followed by immediate
(17), washers (,19), and nuts (18).
refrigerant (R1-2) charging. Connect a vacuum line to
(4) Install terminal board (15) with screws
process tube. When evacuation is complete, pinch off
(12), washers (14), and nuts (13). Install grommet (16).
process tube, remove vacuum line and connect
(5) Install humidistat with attaching parts (1)
refrigerant charging bottle to process tube. Open tube
through (10).
and allow 14 ounces of R-12 refrigerant to enter system.
NOTE
Again pinch off and seal charging tube. Refrigerant
The reference designations of the
system is fully charged and dehumidifier is ready for
items in figure 3-8 are prefixed by
operation.
A17A1.
3-19. Humidistat Repair (fig. 3-8)
3-20. Spiral Tube Evaporator Repair (fig. 3-9
a. Disassembly.
a. Disassembly.
(1) Remove humidistat (11) by removing
(1) Remove spiral tube connector (1).
attaching parts (1) through (10).
(2) Remove front spiral tube (10) and middle
(2) Remove terminal board (15) by removing
plate (11) by removing attaching parts (2) through (9).
screws (12), nuts (13), and washers (14). Remove
(3) Remove spacers (12) and (13), rear spiral
grommet (16).
tube (14), and rear plate (15).
(3) Remove power connection (20) by
removing screws (17), nuts (18), and washers (19).
(4) Remove manual reset circuit breaker
3-19
